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Self-assembly of DNA-templated polypyrrole nanowires: Spontaneous formation of conductive nanoropes

Lookup NU author(s): Dr Stela Pruneanu, Dr Liqin Dong, Tom Hollis, Professor Nick Wright, Professor Andrew Houlton, Dr Ben Horrocks

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Abstract

Polypyrrole nanowires formed by polymerization of pyrrole on a DNA template self-assemble into rope-like structures. These 'nanoropes' may be quite smooth (diameters 5-30 nm) or may show frayed ends where individual strands are visible. A combination of electric force microscopy, conductive atomic force microscopy and two-terminal current-voltage measurements show that they are conductive. Nanoropes adhere more weakly to hydrophobic surfaces prepared by silanization of SiO2 than to the clean oxide; this effect can be used to aid the combing of the nanoropes across microelectrode devices for electrical characterization. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.


Publication metadata

Author(s): Pruneanu S, Al-Said SAF, Dong L, Hollis TA, Galindo MA, Wright NG, Houlton A, Horrocks BR

Publication type: Article

Publication status: Published

Journal: Advanced Functional Materials

Year: 2008

Volume: 18

Issue: 16

Pages: 2444-2454

ISSN (print): 1616-301X

ISSN (electronic): 1616-3028

Publisher: Wiley - VCH Verlag GmbH & Co. KGaA

URL: http://dx.doi.org/10.1002/adfm.200701336

DOI: 10.1002/adfm.200701336


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